Abstract
The Method of Moments is a powerful framework to disentangle the relative contributions of amplitudes of a specific process to its various phase space regions. We apply this method to carry out a fully differential analysis of the Higgs decay channel h → 4ℓ and constrain gauge-Higgs coupling modifications parametrised by dimension-six effective operators. We find that this analysis approach provides very good constraints and minimises degeneracies in the parameter space of the effective theory. By combining the decay h → 4ℓ with Higgs-associated production processes, Wh and Zh, we obtain the strongest reported bounds on anomalous gauge-Higgs couplings.
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Banerjee, S., Gupta, R.S., Ochoa-Valeriano, O. et al. A fully differential SMEFT analysis of the golden channel using the method of moments. J. High Energ. Phys. 2021, 31 (2021). https://doi.org/10.1007/JHEP06(2021)031
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DOI: https://doi.org/10.1007/JHEP06(2021)031